| 双离子成份等离子体的离子声色散关系 |
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| 引用本文： | 刘占军, 郑坚, 刘万东, 等. 双离子成份等离子体的离子声色散关系[J]. 强激光与粒子束, 2001, 13(02). |
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| 作者姓名： | 刘占军 郑坚 刘万东 俞昌旋 郑志坚 |
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| 作者单位： | 1.中国科学技术大学 近代物理系,安徽 合肥 230027;;;2.中国工程物理研究院 高温高密度等离子体物理国家重点实验室, 四川 绵阳 621 900 |
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| 摘 要： | 以离子温度与电子温度之比为参数，将等离子体介电函数作展开，由此解析地求解了双离子成分等离子体的离子声快、慢波模的色散关系。与现有的其它解析理论相比较，所得到的解析公式更加准确。
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| 关 键 词： | 双离子成份等离子体 离子声波 色散关系 |
An analytical approach to dispersion relation for ion-acoustic waves in two-species plasmas |
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| liu zhan-jun, zheng jian, liu wan-dong, et al. An analytical approach to dispersion relation for ion-acoustic waves in two-species plasmas[J]. High Power Laser and Particle Beams, 2001, 13. |
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| Authors: | liu zhan-jun zheng jian liu wan-dong yu chang-xuan zheng zhi-jian |
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| Affiliation: | 1. Department of Modern Physics,University of Science and Technology of China,Hefei 230027,China;;;2. National Key Laboratory of Laser Fusion,CAEP,P.O.Box 988,Mianyang 621900,China |
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| Abstract: | There can exist two kinds of ion-acoustic waves in a plasma, i.e. fast mode and slow mode, if the plasma consists of two ion species which masses are greatly different from each other. Fast and slow mode are mainly due to the motions of light ions and heavy ions, respectively. A systematic perturbation method is used to analytically calculate the frequencies and damping rates of the two modes. The method developed by McKinstrie et al, is based upon the expansion of plasma dispersion relation in a power series of Ti /Te, where Ti,e are te ion and electron temperatures. Comparing with the results obtained from numerical solution shows that the formulae obtained in this paper can give more accurate results than previous studies, such as presented by Williams et al. |
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| Keywords: | two-species plasma ion-acoustic wave dispersion relation |
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